Finding the Fourth Proportional to 208,123.61, 287,210.52 and 112,630.28

Step by Step Solution

1. Step 1: Write the proportion equation
   208,123.61 : 287,210.52 = 112,630.28 : x
2. Step 2: Convert to fraction form
   208,123.61/287,210.52 = 112,630.28/x
3. Step 3: Cross multiply
   208,123.61x = 287,210.52 × 112,630.28
4. Step 4: Simplify right side
   208,123.61x = 32,348,599,850.49
5. Step 5: Solve for x
   x = 32,348,599,850.49/208,123.61
6. Step 6: Final answer
   x = 155,429.75